add info to enable/disable balancer steps

Author: kay-kim

source/includes/steps-3.6-upgrade-sharded-cluster.yaml

@@ -2,8 +2,37 @@ title: Disable the Balancer.
 level: 4
 ref: 3.6-upgrade-disable-balancer
 content: |
-  Disable the balancer as described in
-  :ref:`sharding-balancing-disable-temporarily`.
+
+   Connect a :program:`mongo` shell to a :program:`mongos` instance in
+   the sharded cluster, and run :method:`sh.stopBalancer()` to
+   disable the balancer:
+
+   .. cssclass:: copyable-code
+
+   .. code-block::
+
+      sh.stopBalancer()
+
+   .. note::
+
+      If a migration is in progress, the system will complete the
+      in-progress migration before stopping the balancer. You can run
+      :method:`sh.isBalancerRunning()` to check the balancer's current
+      state.
+
+   To verify that the balancer is disabled, run
+   :method:`sh.getBalancerState()`, which returns false if the balancer
+   is disabled:
+
+   .. cssclass:: copyable-code
+
+   .. code-block::
+
+      sh.getBalancerState()
+
+   For more information on disabling the balancer, see
+   :ref:`sharding-balancing-disable-temporarily`.
+
 ---
 title: "Upgrade the config servers."
 level: 4
@@ -224,11 +253,22 @@ title: "Re-enable the balancer."
 level: 4
 ref: 3.6-upgrade-reenable-balancer
 content: |-
-  Using a |newversion| :program:`mongo` shell, re-enable the balancer as
-  described in :ref:`sharding-balancing-enable`.
 
-  The |oldversion| and earlier :program:`mongo` shell is not compatible with |newversion|
-  clusters.
+   Using a |newversion| :program:`mongo` shell, connect to a
+   :program:`mongos` in the cluster and run
+   :method:`sh.setBalancerState()` to re-enable the balancer:
+
+   .. cssclass:: copyable-code
+
+   .. code-block:: sh
+   
+      sh.setBalancerState(true)
+
+   The |oldversion| and earlier :program:`mongo` shell is not
+   compatible with |newversion| clusters.
+
+   For more information about re-enabling the balancer, see
+   :ref:`sharding-balancing-enable`.
 
 ---
 title: "Enable backwards-incompatible |newversion| features."

source/release-notes/3.6-upgrade-replica-set.txt

@@ -80,7 +80,7 @@ Prerequisites
      following command on the primary. A majority of the data-bearing
      members must be available:
 
-     .. cssclass: copyable-code
+     .. cssclass:: copyable-code
 
      .. code-block:: javascript
 

source/release-notes/3.6-upgrade-sharded-cluster.txt

@@ -77,7 +77,7 @@ Prerequisites
     To set or update ``featureCompatibilityVersion``, run the
     following command on the :program:`mongos`:
 
-    .. cssclass: copyable-code
+    .. cssclass:: copyable-code
 
     .. code-block:: javascript
 

source/release-notes/3.6-upgrade-standalone.txt

@@ -50,6 +50,8 @@ Prerequisites
 The |oldversion| instance must have ``featureCompatibilityVersion`` set
 to ``3.4``. To check ``featureCompatibilityVersion``:
 
+.. cssclass:: copyable-code
+
 .. code-block:: javascript
 
    db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )
@@ -60,7 +62,7 @@ The operation should return a result that includes
 To set or update ``featureCompatibilityVersion``, run the following
 command:
 
-.. cssclass: copyable-code
+.. cssclass:: copyable-code
 
 .. code-block:: javascript